Finding the Fourth Proportional to 10,916.08, 16,369.32 and 3,123.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,916.08 : 16,369.32 = 3,123.12 : x
2. Step 2: Convert to fraction form
   10,916.08/16,369.32 = 3,123.12/x
3. Step 3: Cross multiply
   10,916.08x = 16,369.32 × 3,123.12
4. Step 4: Simplify right side
   10,916.08x = 51,123,350.68
5. Step 5: Solve for x
   x = 51,123,350.68/10,916.08
6. Step 6: Final answer
   x = 4,683.31